diff --git a/bundles/org.eclipse.rap.rwt.visualization.jit/src/org/eclipse/rap/rwt/visualization/jit/JITGraphWidget.java b/bundles/org.eclipse.rap.rwt.visualization.jit/src/org/eclipse/rap/rwt/visualization/jit/JITGraphWidget.java
index e4a515b..309eb49 100644
--- a/bundles/org.eclipse.rap.rwt.visualization.jit/src/org/eclipse/rap/rwt/visualization/jit/JITGraphWidget.java
+++ b/bundles/org.eclipse.rap.rwt.visualization.jit/src/org/eclipse/rap/rwt/visualization/jit/JITGraphWidget.java
@@ -54,7 +54,7 @@
    * @param propName - the name of the property
    * @param propValue - the value of the property
    */
-  public void setProperty (String propName, String propValue) {
+  public void setProperty (String propName, Object propValue) {
      addCommand("setProperty", new Object[] {propName, propValue});
   }
   
@@ -65,7 +65,7 @@
    * @param propName - the name of the property
    * @param propValue - the value of the property
    */
-  public void setNodeProperty(String propName, String propValue)
+  public void setNodeProperty(String propName, Object propValue)
   {
      addCommand("setNodeProperty", new Object[] {propName, propValue});
   }
@@ -76,7 +76,7 @@
    * @param propName - the name of the property
    * @param propValue - the value of the property
    */
-  public void setEdgeProperty(String propName, String propValue)
+  public void setEdgeProperty(String propName, Object propValue)
   {
      addCommand("setEdgeProperty", new Object[] {propName, propValue});
   }